Too late to outlaw it. Government already sanctioned it when they decided to do an auction for it and have classified it in the tax code. Just don't see a ban happening. And even if they did, it's global now. Japan is the largest trader of Bitcoin and the government is now accepting it as payment. And ultimately, it's decentralized so nobody can really stop it. They might be able to temporarily hinder its mass adoption... but good tech cannot be stopped. Remember the electric car??